Cindy's brother (didn't get a chance to meet Cindy) was the example of a perfect host.
Not only was he great in terms of communications, but he was able to accommodate our 8:30am arrival to drop our stuff off, and then proceeded to give us some advice on a great non-touristic floating market to visit nearby - a really great experience in Bangkok.
The room was large, quiet, peaceful, very clean, and conveniently located about a 7 min walk from a BTS station, which made getting around super-easy.
When I left, my friend needed to stay a bit longer, so Cindy's brother helped out with that too.
I don't think you can get a better value for a central private space in the city, and have such a great host to boot.
HIGHLY RECOMMENDED.
Thanks once again!